Connecting-rod for engines.



I a. R. FOULDER. CONNECTING ROD FOR ENGINES. APPLICATION FILED MAR. 22, 1912.

Patented Oct. 29, 1912.

WITNES PAT JAMES R. rounnnn 'or sonnuncrnna', new roan.

' coNNnc'nne-aon FOR Enem es.

. Specification of Letters Iatent.

Patented Get.

Application filed March 22,1912. Serial NofiBEAOE.

To all whom 2'25 may concern: I

Be itknown that I, James R. .FOULDER, of Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful Improvement in Connecting-Rods for Engines, of which improvement the following is a specification.

My invention is more particularly designed for application in the main connecting rods of locomotive engines, and its object is to provide means whereby the necessity, heretofore obtaining, of cutting away the flanges of the crank pin half brasses may be' obviated, and duplicate half brasses may be applied and held firmly in position, with the capacity of ready The improvement claimed is hereinafter fully set forth.

In the'accompanying drawings: Figure 1 is a side view, in elevation, of the crank pin end of a connecting rod, illustrating an application of my invention; Fig. 2, a longitudinal central section through the same; Figs. 3 and 4, side views, illustrating the manner of putting a half brass inposition; and Fig. 5, 'a view in perspective of one of the half brasses, detached.

My invention is herein exemplified as ap-v plied in a locomotive engine main connecting rod, the body, 1, of which 1s ofI sect1on,as in present approved practice, and 1S provided with an enlarged crank pin end or head, 1, in which there is, as heretofore, formed a longitudinal opening or space, 1", for the reception of the crank pin hal brasses and of the wedge which holds them in position. In the pra tice of my invention, a wedge space, 1, of greater depth than the opening, l, is formed in the head, at and adjoining the end. thereof nearer the body of the rod, and communicating with the opening, 1 the head, 1*, being correspondingly increased in depth throughout the length of the wedge space, 1, 1I1'0Id61 to maintain the normal strength of the strap portions of the metal of the head above and Two duplicate crank pin half brasses, 2, eac'hbored out to a semicylindrical bearing surface, and having flanges, 52, extending entirely around its below said space.

ends, which flanges fit against the sides of i the opening,

and thereby '=revent lateral the half brassa, are fitted in l and are held in position therein'by'an adjusting wedge, 3, and an movement of auxiliary wedge, 3 which wedges are and accurate adjustment.

' drawn and held to a bearing on the half brasses, by a bolt, l, passing the strap portions of the head andengaging an internal thread in the adjusting wedge, 3, and lock nuts, i engaging a thread on the bolt, 4:. The straight side of the ad'ustf in wedge,'3,z abuts freely through against the endo the wedge space nearer the'body of the rod, and

its inclined side against the correspondingly inclined'side of the auxiliary wedge, 3 thestraight. side ofthe latter abutting against the end of the adjoining half brass, 2. It will be seen that the auxiliary wedge is deeper than the adjoining half brass, that is to say, it extends from the top to thebottom of the deepened wedge space. An increased degree of adjustment and longer wedge bearing, which are very desirable features, are presented in this construction.

In connecting rods of prior construction, so far as my knowledge and information extend, it has been necessary to cut away portions of theflanges of the half brasses in order to enable them head, correspondingly reducing their effectiveness,-but by the provision-of the deepened wedge space, 1, above described, half brasses having full end flanges, as is desirable, may be inserted-and twisted into position, as indicated in Figs. 3 and .4, and may, as before stated, be held more firmly in position and'more accurately adjusted than in the constructions applied in practice prior to my invention. I

I claim as my invention and desire to secure by Letters Patent:

1. The combination,

with an engine conbrass openingformed in its head and an adjoining wedge space of greater depth, of a pair of symmetrical crank pin half brasses fitting in said opening and having symmetrical end fianges extending entirely around their bearing surfaces, and means, located in the wedge space, for adjusting said half brasses'.

2. The combination, with an engine connecting rod having a longitudinal crank pin brass opening formed in its head and an adjoining wedge space of greater depth, of crank pin-half brasses fitting in said opening and having semi-cylindrical bearing surfaces and end flanges extending entirely around their bearing surfaces. and engaging the sides of the head to prevent lateral movement, and an adjusting wedge fitting in to be inserted in the.

of said half brass,

the Wedge space and transmitting 3. The combination, with an engine 0011- necting rod having a longitudinal crank pin brass opening formed in its head and an adjoining wedge space of greater depth, of crank p'in half brasses fitting in said opening and having semi-cylindrical bearing surfaces and end flanges extending entirely around their bearing surfaces and engaging the sides of the head to prevent lateral movement, an adjusting wedge fitting .in the Wedge space, an auxiliary wedge interposed between the adjusting wedge and the adjacent half brass, and between the end flanges and means for moving and locking the adjusting wedge.

4. The combination, with an engine connecting rod having a longitudinal crank pin brass opening formed in its head and an adjoining crank pin half brasses fitting in said openingand having semi-cylindrical bearing surfaces and end flanges extending entirely around their bearing surfaces and engaging the sides of the head to prevent lateral movement, an adjusting Wedge fitting in the wedge space, an auxiliary Wedge extending throughout the depth of the-wedge space, between the adjusting Wedge and the adjacent half brass and between the 'endfianges of said half brass, and means for moving and locking the adjusting Wedge.

C. B. HARBISON, A. C. NEGUS.

wedge space of greater depth, of- 

